Automatic cock valve



H. AASS.

AUTOMATIC COCK VALVE.

APPLlcAloN man MAY 25. 1921.

Patented NOV. M, 1922.

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ya /1170 r ,40u

patented Novg ll, i922.

HTALMAR AASS, OF CHRISTIANIA, NORWAY.

AUTOMATIC CGCK VALVE.

Application le. May 25, 1921. Serial No. 472,331.

To aZZ 'whom it may concern Be it known that l, HJALMAR AAss, a subject of the `King oit Norway, residing at Christiania, Norway, have invented certain new and useful improvements in Automatic Cock Txalves; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or: figures of reference marked thereon, which form a part of this specification.

The present invention relates to the kind ot cock valves which is adapted to automatically shut ott the outlet from the inside of the valve seat, when the usual or main valve is removed, and according to the invention the automatic valve comprises a cu a-shaped member, which is so shaped that it can be introduced through the valve seat opening from outside, whereupon it is expanded along its circumference by being pressed against a cone shaped projection or abutment in the bottom of the cock casing or by means of a suitable tool or the like, so that it acts as a valve.

.'lfwo different forms or' the invention are illustrated on the accompanying drawing:

ll'ig. l is'a section through a cock with side inlet.

Fig. 2 is a corresponding section through a cock with bottom inlet.

F 3 is a section on the line A B of Fig. 2.

he automatic or auxiliary valve l is placed as usual behind 'the valve seat 2 and is pressed by the liquid against said seat from the inside when the main valve 3 is removed.

According to the invention the automatic valve body has the form o't a cup, the diameter of which a little smaller than the inside diameter of the valve seat, so that it may be introduced through the valve seat opening lv from the outside, whereupon it is expanded along` its rim in such a manner that it can not pass through said opening 4, but is adapted to act as a valve on the inside of' the valve seat.

According to the form of the invention illustrated on F ig. l the expansion of member l is caused by means of a conical abutment 5 extending upwardly from the bottom of the cock housing co-axially with the valve spindle, and the cup-shaped valX'e body is pressed against said conical abutmentY by means of a tool (not shown) introduced from above.

According to the form of the invention illustrated on Fig. 2 the expansion ot mem ber l after its having' been introduced from above takes place by means ot a. suitable tool (not shown) introduced through the tube opening 6. i

According to this form ot the invention the valve l is guided in the housing` between ribs 7, as will be seen from Fig. 3.

Claims:

l. In a. device of the class described, a valve housing and a main valve, an automatic valve adapted to shut off the outlet from inside the valve seat when the main valve ig removed, said automatic valve being cup-shaped and having its rim expanded, and means for expanding the rim or" the cup-shaped valve at'ter it has been passed from the outside through the valve seat opening in order to adapt it to act as an automatic valve.

2. ln a device ot the class described, a valve housing and a main valve, an automatic valve adapted to shut olil the outlet troni insich-)JI the valve seat when the main valve is removed, said automatic valve being cup-shaped and having its rim expand ed, and a conical abutment in the valve housing for expanding the rim ot the cupshaped valve alter vit has been passed 'from the outside through the valve seat opening in order to adapt it to act as an automatic valve.

In testimony that I claim the 'foregoing my invention, I have signed my name in presence of two subscribing witnesses.

MORGAN Busen, L. DALE PoPn. 

